/**
 * Copyright 2023-present DreamNum Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { DEFAULT_NOW_FORMAT, excelDateTimeSerial } from '../../../basics/date';
import { NumberValueObject } from '../../../engine/value-object/primitive-object';
import { BaseFunction } from '../../base-function';

export class Now extends BaseFunction {
    override minParams = 0;

    override maxParams = 0;

    override calculate() {
        const now = new Date();
        const utcNow = new Date(Date.UTC(now.getFullYear(), now.getMonth(), now.getDate(), now.getHours(), now.getMinutes(), now.getSeconds()));
        const currentSerial = excelDateTimeSerial(utcNow);
        const valueObject = NumberValueObject.create(currentSerial, DEFAULT_NOW_FORMAT);
        return valueObject;
    }
}
